The cold we have at least once a year is a viral infectious disease of the upper respiratory tract that primarily affects the nos, the throat, sinuses, and larynx Signs and symptoms may appear less than two days after exposure to the virus. These may also include coughing, sore throat, runny nose, sneezing, headache, and fever. More than 200 virus strains are implicated in causing the common cold and they spread through the air during close contact with infected people or indirectly through contact with objects in the environment, followed by transfer to the mouth or nose. There is no vaccine for the common cold.
This disease is caused by a superficial fungus that exists in the soils of tropical and subtropical environments. It is basically a hair disease characterized by soft nodules composed of yeast cells and arthroconidia that encompass hair shafts. The most effective treatment is the use of antifungal medication or shaving the affected area.